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Ecological risk assessment of heavy metals in sediments of Xiawan Port based on modified potential ecological risk index

Authors :
Juan Yin
Hong-wei Jiang
Xingzhong Yuan
Jie Liang
Zhifeng Liu
Guangming Zeng
Huina Zhu
Huajun Huang
Chang Zhang
Min Jiang
Source :
Transactions of Nonferrous Metals Society of China. 22:1470-1477
Publication Year :
2012
Publisher :
Elsevier BV, 2012.

Abstract

Modified potential ecological risk index (MRI) was proposed based on the potential ecological risk index (RI) and risk assessment code (RAC) by modifying an index. The modified index was relevant to the chemical speciation of heavy metals. Xiawan Port, a typical region contaminated by industrial production, was selected as a case study area. The total concentrations and chemical speciation of heavy metals in sediments of Xiawan Port were analyzed. The experimental data indicate that Xiawan Port is seriously polluted by heavy metals, especially by Cd. The risks of heavy metals are evaluated by RI, RAC and MRI, respectively. The resluts of MRI show that the risks of heavy metals are in the decreasing order of Cd>Pb>Cu>Zn. Comparison of results by different methods reveals that MRI integrates the characters of RI and RAC. MRI is recognized to be useful for risk managemnt of heavy metals in sediments.

Details

ISSN :
10036326
Volume :
22
Database :
OpenAIRE
Journal :
Transactions of Nonferrous Metals Society of China
Accession number :
edsair.doi...........4c9a30cfeeb6a6097c030c5690d43b26